baber/WOPTO huggingface dataset:
Patent GB-574748-A (GB)
Title: Improvements in tensioning devices for transmission chains and the like
IPC: F16H7/08
Filed: 1944-02-09
Abstract: 574,748. Chain-tensioning arrangements. WELLER, J. Feb. 9, 1944, No. 2368. [Class 80 (i)] [Also in Group XXXII] Relates to tensioning devices in which a flexible slipper is adapted to bear with resilient pressure upon a free length of a transmission chain, and consists in a non-return device formed integrally with the flexible slipper so that both may be mounted as a self-contained unit upon pins or pivots without any extraneous fittings by which its movement is controlled. A single leaf-spring A, Figs. 1, 2, bearing against the chain B is directly anchored to a pivot pin D and is supported from the pin C through a ratchet member E pivoted thereon, the free end of the spring being folded to form a housing in which the member E may slide. The free end is formed as a pawl F to engage the teeth on E and is maintained in engagement with the teeth by the pressure between spring and chain. In a modification, Figs. 3 and 4, the spring is laminated, the outer leaf H, bearing on the chain J, being pivoted to an anchor pin K, the inner leaf L being pivoted to a pin M and the friction between the leaves being increased by a strip of friction material N riveted to the leaf L. A ratchet member O riveted to the leaf H is adapted to be engaged bv the free end of the leaf L, which end 'may be divided to form pawls of different lengths in order to reduce lost motion. A loading spring G may be provided and, in a modification, may be attached to a pivoted pawl. In all cases, the direction of the ratchet member relative to the flexible slipper remains appreciably the same, viz. tangential to the curve of the slipper during increase of curvature of the latter. The ratchet-and-pawl device may be replaced by a hydraulic plunger.
Patent GB-1087761-A (GB)
Title: Improvements relating to flameproof electrical switchgear
Inventor: DAVIDSON GEORGE WILSON
IPC: H02B1/28
Filed: 1964-01-20
Abstract: 1,087,761. Switchgear structures. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 14, 1965 [Jan. 20, 1964], No. 2394/64. Heading H2B. A vacuum switch (10) is mounted on a partition (4) separating the two compartments (2, 3) of a flameproof cubicle (1) and is connected by an isolating and earthing switch blade (26) to a bus-bar terminal and through a current transformer (33) to an output terminal (43). In a three-phase switchgear three such vacuum switches (8-10) are mounted on the partition and connected to respective bus-bars (5-7) and output terminals (41-43). The vacuum switches are operated by a mechanism (21) (not shown) and a handle (22) external to the cubicle. The isolating switches (24-26) are operated by a handle (27). The cubicle 1 is provided with flameproof windows (28-30) enabling the position of the switches (24-26) to be seen. The cubicle can be directly mounted on a transformer housing by means of a flange (45) or be connected to a bus-bar assembly by further flanges (46). The bus-bars may be insulated with moulded resin as described in Specification 1,087,762. The vacuum switch may be as described in Specification 1,030,798.
Patent GB-713567-A (GB)
Title: Improvements in or relating to devices for transmitting ultrasonic power into a workpiece
IPC: G01B17/02
Filed: 1952-01-30
Abstract: 713,567. Photo-electric control systems. SPERRY PRODUCTS Inc. Jan. 30, 1952 [May 17, 1951], No. 2488/52. Class 40 (3). [Also in Groups XXXVI, XXXVIII and XL(c)] In a deflection-modulated cathode-ray tube display for an ultrasonic testing device (see Group XXXVIII) in which the time-base is synchronized with a rotating condenser 17, the motor 18 driving the condenser also rotates a shutter 31 interposed between a light source 33 and a photo-electric cell 35 which energizes a generator 40 an output from which is applied via lead 41 as a blanking signal to the grid of the cathoderay tube 25 and another output being applied to a push-pull time-base amplifier 43.
Patent GB-158273-A (GB)
Title: Improvements in carcass-dehairing machines
IPC: A22B5/08
Filed: 1921-01-19
Abstract: 158,273.. Kramer, L. A. Jan. 19, 1920, [Convention date]. Carcases, treating. - A machine for dehairing and cleaning carcases comprises an horizontal endless conveyer 33 to which the carcases are individually supplied, from the scalding tank 23, by an inclined conveyer 20, upstanding members 25, 26, secured to the conveyers, positively to move the carcases, and revolving flexible scrapers or beaters arranged to operate on the carcases on the conveyer 33. The conveyers 33, 20 consist of a plurality of endless chains engaging with sprocket-wheels 15, 17 and 19, 21 respectively, the upper parts of the conveyers 33 being supported in wooden troughs 32 which are notched and metal lined, opposite the beater shafts by which they are supported, and the lower parts of the conveyers 33 are supported by the upstanding members 26 which bear against the bottoms of a corrugated strainer 38 and remove hair &c. to the shoot 39. The members 25, 26 have terminal rollers 27 which prevent the carcases from being lifted over the members 26, and are arranged to align at the junction point of the conveyers. The scrapers comprise a number of flexible beaters 29 secured to wheels 28 which have vertically disposed rims 31 to prevent lateral displacement of the beaters, and scraping members 30 attached to the beaters 29 and arranged always to project above the rims 31. A lower series of scrapers are. positioned so that the wheels 28 project above the conveyer 33 and thus rotate the carcases to present all surfaces to the scrapers which action is facilitated by the rollers 27, and an upper series, which may be staggered relatively to or in vertical alignment with the lower series, is directly connected to the lower series by belts 6, 8. The flexible beaters on each wheel 28 are alternately long and short and co-operate with short and long beaters of each adjacent scraper. A pump which supplies cleaning water from a drip tank 37 to the spray nozzles 41, the conveyers and scrapers derive motion from a common source through belts, worm and bevel gears (not shown in Fig 3). The carcases are discharged from the conveyer to inclined spaced slats leaning to a delivery table.
Patent GB-104199-A (GB)
Title: Gun Silencer.
Inventor: THOMPSON EUGENE WASHINGTON
IPC: F41A21/28
Filed: 1916-02-21
Abstract: 104,199. Thompson, E. W. Feb. 21, 1916. Sound of discharge, modifying.-Relates to silencers of the type in which a series of chambers are disposed around the exterior of the gun barrel so as to impede the escape of the powder gases, which pass into the chambers through perforations in the barrel. According to the invention, the chambers 3<a> are formed by slotted circular collars 4a spaced at intervals around the outer surface of the gun barrel and enclosed by a sleeve 5a, which screws on to an enlargement 2<c> at the breech-end of the barrel. The gun gases pass into the chambers through apertures 7a.
Patent GB-852811-A (GB)
Title: Improvements in or relating to a clock magnetic escapement device
IPC: G04C5/00
Filed: 1957-01-24
Abstract: 852,811. Escapements. JUNGHANS, H., and JUNGHANS A. G. GEB. Jan. 24, 1957 [Jan. 24, 1956], No. 2621/57. Class 139 A magnetic escapement comprises an escape wheel 16, Fig. 3, the pole teeth 16a of which move between the poles 10c, 10d of a V-shaped permanent magnet 10, Fig. 1, of laminated construction. A non-magnetic safety member 15, Fig. 2, is fixed in dove-tailed recesses 10f, 10g, of the arms 10a, 10b of the magnet 10. Specifications 698,406, 742,302 and 852,812 are referred to.
Patent GB-996102-A (GB)
Title: Improvements in or relating to the processing of plastic materials
IPC: B29C48/03
Filed: 1963-05-23
Abstract: 996,102. Feeding plastic material to moulding machines. ECKERT & ZIEGLER G.m.b.H. May 23, 1963 [May 26, 1962], No. 20648/63. Heading B5A. A mixture of substances is fed to the form tool of a forming machine, e.g. an extrusion die or the mould F of an injection moulding machine by feeding separately to a worm 2, a basic substance and one or more additives, the worm being driven at a selected rate to feed the mixture to the form tool, and the or each additive being fed to the worm at a selected rate proportional to the feed speed of the worm, thereby maintaining a preselected composition of the mixture. In the apparatus illustrated, the basic substance, an elastomer or a plastics material, is fed from a hopper 1 to the worm 2, and an additive 8 such as a cross-linking agent or a hardener, is fed from a cylinder 4 by a double piston 5, 7 actuated hydraulically or pneumatically to apply a feed pressure proportional to the rate of rotation of the worm 2. In alternative embodiments the piston 5 is actuated by a threaded spindle and driving nut, and is replaced by a worm, respectively.
Patent GB-1169700-A (GB)
Title: Improvements in Electrical Test Equipment
Inventor: ELDRED RAYMOND WILLIAM
IPC: F02P17/00
Filed: 1966-01-20
Abstract: 1,169,700. Selective signalling. R. W. ELDRED. 17 Jan., 1967 [20 Jan., 1966], No. 2703/66. Heading G4H. [Also in Division G1] An arrangement for determining whether an applied voltage in the form of short, widely spaced pulses lies within determined limits incorporates three monostable multivibrators connected so as to respond to different levels of the input voltage. The outputs from those which respond are added together to provide an output signal which can take one of four values, the lower two indicating that the input is low, the third that it is within range and the fourth that it is high. The multivibrators 1, 2, 3 are connected to different tappings on a potential divider to which the input is applied, so that different values of inputs are required to reach the switching thresholds of the separate multivibrators. Alternatively an arrangement of multivibrators with different switching thresholds may be used. The sum of the multivibrator outputs is smoothed at 56 and compared in an amplifier 21 with a D.C. level at 22, set to correspond to the operation of two multivibrators. If the amplifier produces a fault voltage output a relay 26 operates to light a fault lamp, which enables a further circuit indicating whether the fault is high or low to be energized. Feedback may be applied to the multivibrator circuits, or the output of one used to gate a pulse stretcher following the adder circuit (Figs. 3 and 4, not shown). In these arrangements the output pulse width is varied in accordance with the input repetition frequency, so that the sum output signal is independent of frequency.
Patent GB-1086179-A (GB)
Title: Improvements in and relating to power switchgear for high voltage circuits
Inventor: FLURSCHEIM CEDRIC HARALD
IPC: H01H33/66
Filed: 1964-01-22
Abstract: 1,086,179. Vacuum switches; switchgear structures. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 30, 1964 [Jan. 22, 1964], No. 2796/64. Heading H2B. Series connected vacuum switches 4 are immersed in gas or liquid in an inner insulating chamber 130 which is enclosed in a metal tank 53 separately filled with gas or liquid. Individual vacuum switches are removable through a cover 138, after draining chamber 130, without disturbing the fluid in tank 53. The fluid in chamber 130 is circulated by a pump 140 through a cooling radiator 141. Connection to external terminals 51, 51<SP>1</SP> is through contacts 133, 133<SP>1</SP> connected to end ones of the vacuum switches. Resistors or capacitors may be connected across the vacuum switches. A seriesparallel arrangement of vacuum switches may be used.
Patent GB-847992-A (GB)
Title: Magnesium alloys having a high resistance to permanent creep deformation at elevated temperatures
IPC: C22C23/02
Filed: 1959-01-27
Abstract: A magnesium-base alloy, resistant to creep at elevated temperatures, has the following composition by weight:- .Al.2 to 10% .Mn.0.001 to 0.5% .Ca more than 0.5.and up to 3% .Zn.0 to 4% .Commercial Mg-the remainder..  The Cu and Si impurity contents should not exceed 0.5% each and the alloy may also include Fe 0.01-0.1%; Be up to 0.005%.
Patent GB-419340-A (GB)
Title: Improvements in and relating to wheels for vehicles
IPC: B60B3/16
Filed: 1933-02-04
Abstract: 419,340. Vehicle wheels. KELSEYHAYES WHEEL CORPORATION, 3600, Military Avenue, Detroit, Michigan, U.S.A. Feb. 4, 1933, No. 3008/34. Convention date, Feb. 23, 1932. Divided out of 419,209. [Class 144 (i).] A wheel comprises two metal stampings welded together in the mid-plane of the wheel to form tubular spokes, the inner stamping 1 constituting the load-supporting element and formed with a flange 6 for attachment to the permanent hub 10. The flange 6 may be reinforced by ribs 14, 15, and the outer stamping 3 is formed with an extension 16 carrying the hub-cap attachment-means 17. The stampings 1, 3 preferably taper in thickness from the wheel-centre.
Patent GB-942679-A (GB)
Title: Improvements in or relating to harrow tools
IPC: A01B21/06
Filed: 1960-10-05
Abstract: 942,679. Agricultural impliments. C. VAN DER LELY N.V. Oct. 5, 1960 [Oct. 16, 1959], No. 3016/62. Divided out of 942,677. Heading A1B. A harrow tool comprises a tine support 58 and a plurality of tines 70 connected thereto wherein each tine is connected to the support by way of a corresponding torsion rod 62 which extends substantially horizontally during use of the tool. As shown applied to a rotary harrow the torsion rods and tines are formed integrally and each torsion rod includes two mutually inclined sections 63, 64 the tines extending approximately vertical during use of the tool. A number of tools are mounted on a frame 1 and each tool is freely rotatable by contact with the earth.
Patent GB-559841-A (GB)
Title: Improvements in or relating to circuit arrangements for discharge tube amplifiers
IPC: H03G3/16
Filed: 1943-02-24
Abstract: 559,841. Valve amplifying circuits. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). Feb. 24, 1943, No. 3053. Addition to 554,371. Drawings to Specification. [Class 40 (v)] The subject-matter of this Specification is identical with that described in Specification 609,859, [Group XL (c)].
Patent GB-556525-A (GB)
Title: Improvements in walls and partitions
IPC: E04B2/28
Filed: 1943-04-09
Abstract: 556,525. Building-blocks. SODEN, A. W. April 9, 1943, No. 3067/42. [Class 87 (i)] Building blocks a for walls &c. are of double step formation on their opposite surfaces c and have oppositely extending tongues b to engage therewith thus enclosing spaces d. The webs e are apertured at f and secured together by the rods g.
Patent GB-1284211-A (GB)
Title: Improvements in chairs
Inventor: MANGHAM JOHN WILLIAM
IPC: A47C3/12
Filed: 1970-01-22
Abstract: 1284211 Securing cushions W STEEL & CO Ltd 19 Jan 1971 [22 Jan 1970] 3130/70 Heading A4M A chair comprises a moulded shelf to which discrete cushions are secured by resiliently deformable studs engaged in holes in the shelf, the studs being incorporated in the pads and comprising a shank extending through a plate also incorporated in the pad, the shank terminating in an enlarged head projecting from the rear of the pad and the securing being effected by pressing a stud head through an associated hole so that the head becomes temporarily deformed as it passes through the hole, the head resuming its original shape after complete passage through the hole and the shank being received in the hole without substantial clearance.
Patent GB-212054-A (GB)
Title: Improvements in or relating to photographic printing apparatus
IPC: G03B27/06
Filed: 1923-02-02
Abstract: 212,054. Owen, M. Feb. 2, 1923. Printing - apparatus. - In apparatus comprising two frames which can be separated for negative manipulation or clamped together and rotated into a desired position for printing, the two frames 14, 17 are so mounted and connected together on the supporting frame 2 that they move towards and away from each other simultaneously. The negative frame 14 is rotatablv mounted on spindles 13 carried by crossheads 9 which move in vertical guide-ways 8. The frame 14 is clamped in any angular position by a clamping nut 16. The frames 14, 17 are connected together by cables attached at 20 and 21 to the opposite sides of the frame 17. and passing in succession over intermediate pulleys a, 18, b, 19, c. The frame 14 is raised and lowered by rack extensions 10 of the cross-heads 9 and pinion 11 turned by the hand-wheel 12. Spring pawls 26 prevent the frame 14 falling freely, and when the frames are separated to the fullest extent pivoted latches 25 engage pins 24 on the frame 17. The pawls 26 and latches 25 are released by the spring-controlled treadle 29 through connecting rods 28. 30. When the frames are brought together for printing they are clamped by boards 41 mounted by brackets 35 on the frame 14 and operated by eccentrics on the spindles 36. The frame 17 has extensions 33 which move in guides 34 on the supporting frame 2 when the frames are separated, but when the frames are damped together they can so rotate on the spindles 13.
Patent GB-373088-A (GB)
Title: Improvements in or relating to protective devices for the optical parts of arc lamps
IPC: H05B31/30
Filed: 1932-02-03
Abstract: 373,088. Electric arc lamps. ZEISS IKON AKT.-GES., 72, Schandauerstrasse, Dresden, Germany. Feb. 3, 1932, No. 3254. Convention date, Feb. 25, 1931. [Class 75 (iv).] Lantern shutters.-In an electric arc lamp provided with a shutter for protecting the lens or reflector from the flame produced when the arc is struck, means are provided for maintaining the shutter in protecting position until the lamp has been started. In the form shown, a heatresisting shutter 3 is locked in position between the arc 2 and the reflector 1 by means of the spring-pressed armature 5 of a solenoid 6 which may be included in the lamp circuit or in a separate circuit which is switched on and off bv a thermic relay mounted on or in the shutter. When released from the armature 5 the shutter may be raised by hand or by electromagnetic br other automatic means, a projection 9 on the shutter passing over an upwardly swingable catch 10 on the spring-pressed pivoted armature 8 of a solenoid 7 in the lamp circuit. When the latter is broken the armature 8 releases the shutter which then falls into the protecting position.
Patent GB-263329-A (GB)
Title: Improvements in, or relating to, looms for weaving tufted pile fabrics
IPC: D03D39/06
Filed: 1926-02-05
Abstract: 263,329. Southwell, Ltd., H. & M., and Head, T. W. Feb. 5,1926. Pile-fabric looms.-Relates to looms for weaving tufted pile fabrics wherein two endless side chains 12, for carrying tube frames 4 of great length or a number of tube frames arranged end to end, pass over driven sprocket wheels 5, 6 the lower rims of the chains being supported on driven sprocket wheels 8, 9, and consists in providing one or more intermediate endless chains 3, the upper rims of which pass over driven sprocket wheels 11, while the lower rims are guided by pairs of fixed curved guides 12. The guides also afford bearing surfaces for rollers provided on the chain.
Patent GB-1415971-A (GB)
Title: Dielectric sealants
IPC: H01F27/32
Filed: 1973-01-23
Abstract: 1415971 Gas-insulated cables; electric switches J J PACKO 23 Jan 1973 3399/73 Headings H1A and H1N To render self-sealing an enclosed electrical component, such as a switch cable or transformer, enclosing compressed insulant gas containing substantially no free oxygen, there is incorporated in the gas a volatilizable or volatilized sealant agent inert to the insulant gas, of such nature and concentration as to form a solid seal at any point of leakage. The insulant gas may be a fluoride of sulphur or a halogenated hydrocarbon at 5-50 atmospheres pressure. Selenium hexafluoride may also be used. Sealant agents comprise at least one substance which reacts with ambient oxygen and/or moisture. They may comprise alkyls of Group IIB or IIIA metals; Group IIIA metal alkyl halides or hydrides; and mixtures of a metal alkyl and an organo-silane such as an alkyl alkoxy silane or alkyl silicate, which may also undergo some interaction between their components to form products which are themselves sealing agents.
Patent GB-804696-A (GB)
Title: Improvements in or relating to alloy transistors
IPC: H01L23/482
Filed: 1956-02-03
Abstract: 804,696. Transistors. SIEMENS & HALSKE A.G. Feb. 3, 1956 [Feb. 3, 1955], No. 3480/56. Class 37. In a transistor having alloyed emitter 2 and collector 3 electrodes on opposite sides of a semi-conductor wafer 1, the base electrode 4 consists of a solid noble metal, i.e. gold, silver, platinum, ruthenium, rhodium, palladium, osmium or iridium. In the example shown in Fig. 1, the base electrode is in the form of a ring surrounding the emitter, and may consist of a wire, or a stamping. Alternatively the base electrode may be combshaped, with the remaining electrodes arranged between the teeth, and it may contain a trace of acceptor or donor material to ensure good contact, or alloying elements such as silver or lead. Two base electrodes may be provided on opposite sides of the wafer.
Patent GB-564646-A (GB)
Title: Improvements in or relating to the recovery of ethylene oxide
IPC: C07D301/32
Filed: 1943-03-04
Abstract: Ethylene oxide is recovered from dilute gaseous mixtures by absorbing the ethylene oxide in an aqueous solvent, treating the solvent under reduced pressure with air or inert gas to expel the ethylene oxide, and absorbing this from the resulting mixture at a higher pressure in a smaller quantity of aqueous solvent than that used in the first stage.  The first solution may be stripped at a pressure of 50 min. of mercury, and the amount of solvent in the second stage may be one-tenth of that of the first.  Specification 533,054 is referred to.
Patent GB-1463161-A (GB)
Title: Electrophotographic camera
IPC: G03G15/08
Filed: 1974-01-25
Abstract: 1463161 Electro-photography COULTER INFORMATION SYSTEMS Inc 25 Jan 1974 [14 Sept 1973] 03622/74 Heading G2H Electro-photographic camera 10 comprises a photo-conductive member 12 and charging means 24 which charge the member simultaneously with exposure at such a rate that sensitization by charging replaces the use of a controlled duration of opening shutter. A photo-cell 84 measures incident light, and an electrometer 86 measures the charge applied, so that control 90 stops charging at a level appropriate to the light level. Liquid or powder developer is then applied to the photo-conductive member, and the developed image is fixed by heat
Patent GB-257823-A (GB)
Title: Meat boiler or cooker for ham and the like
IPC: A47J27/20
Filed: 1926-02-09
Abstract: 257,823. Adelmann, H. Feb. 9, 1926. Heating and cooking vessels; lids.-Relates to a container for cooking and moulding by pressure hams and the like, the vessel being designed to produce a mould of the shape shown in Fig 6. Fig. 2 shows the container 10 formed with a mouth flange having offset portions 12 adapted to be engaged by racks 16 pivoted to a pair of oppositely disposed levers 15 mounted on the cover 13. The levers are pivotally mounted on screws or pins 21 encircled by springs 20 and projecting upwardly from the cover, their faces being secured by being engaged under hooks or catches 18. Fig. 5 shows a modified construction according to which the " free " ends of the levers of Fig. 2 are pivotally attached to anchor members 27 forming part of the support for the screw pin 21 of the other lever: